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20E型电力机车是一种双流制交流传动电力机车,适用于AC 25kV/50 Hz和DC 3 000V两种供电制式。根据不同的供电制式,机车能够在持续运行的情况下实现主电路转换。本文主要介绍了20E型机车电气牵引系统的网侧高压电路和牵引变流系统设计原理、机车控制系统功能,并分析了设计关键要素和技术特点。
20E electric locomotive is a dual-flow AC drive electric locomotive, suitable for both AC 25kV / 50Hz and DC 3 000V power supply system. According to different power supply system, the locomotive can realize the main circuit conversion under continuous operation. This article mainly introduces the design principle of the grid-side high-voltage circuit and traction converter system of the 20E locomotive electric traction system, the functions of the locomotive control system, and analyzes the key elements and technical features of the design.